Trying the callPackagePin with libnrm

pkgs/default.nix

@@ -15,11 +15,15 @@ let
   gitpin = f: pkgs.fetchgit {inherit (pkgs.lib.importJSON f) url sha256 rev fetchSubmodules;};
   compiler_path = "/opt/intel/compilers_and_libraries_2017.1.132/linux";
   callPackage = pkgs.lib.callPackageWith pkgs;
-  callPackagePin = path : depset: pkgs.lib.callPackageWith pkgs (toPath "/${path}.nix") (depset//{src = gitpin (toPath "/${path}.json");});
+  callPackagePin =
+  { path
+  , jsonpath ? toPath "/${path}.json"
+  , depset ? {} } :
+  pkgs.lib.callPackageWith pkgs (toPath "/${path}.nix") (depset // {src = gitpin jsonpath;});
   pythonPackages = pkgs.python27Packages;
 in rec {
   #NRM components
-  libnrm = callPackage ./libnrm {};
+  libnrm = callPackagePin {path="libnrm/default";};
   nrm-containers = callPackage ./containers {
     inherit pythonPackages;
     src = packagepins.containers.nix;
@@ -36,8 +40,8 @@ in rec {
     qmcpack = callPackage applications/qmcpack {};
     openmc = callPackage applications/openmc {};
     stream = callPackage applications/stream {};
-    graph500 = callPackagePin "applications/simple/graph500" {};
-    simple = callPackagePin "applications/simple/dgemm_randomwalk" {inherit intel libnrm;};
+    graph500 = callPackagePin {path="applications/simple/graph500";};
+    simple = callPackagePin {path="applications/simple/dgemm_randomwalk"; depset={inherit intel libnrm;};};
   };
 
   #Intel compilers

pkgs/libnrm/default.json

+{
+  "url": "https://xgitlab.cels.anl.gov/argo/libnrm.git",
+  "rev": "d8f06ac626e7b64636c2756471c661de90aff2f9",
+  "date": "2018-08-23T16:24:36-05:00",
+  "sha256": "0n4bc29x9ngp7dv5np69bjg4nqbmqn93szpd6czzhs1r89wz0pdh",
+  "fetchSubmodules": true
+}

pkgs/libnrm/default.nix

-{ stdenv, fetchgit, zeromq, mpich2, gfortran }:
+{ stdenv, src, fetchgit, zeromq, mpich2, gfortran }:
 stdenv.mkDerivation {
+  inherit src;
   name = "libnrm";
-  src = fetchgit {
-    url="https://xgitlab.cels.anl.gov/argo/libnrm.git";
-    sha256="0n4bc29x9ngp7dv5np69bjg4nqbmqn93szpd6czzhs1r89wz0pdh";
-  };
 
   buildInputs = [ zeromq mpich2 gfortran ];
 

pkgs/libnrm/default.sh

+#!/usr/bin/env bash
+nix-prefetch-git https://xgitlab.cels.anl.gov/argo/libnrm.git refs/heads/master > default.json